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Black newly applied sealcoat contrasts with unsealed asphalt

June 2004 (approx.)

Detailed Description

Newly applied coal-tar-based sealcoat is dark black, sharply contrasting with the unsealed asphalt parking lot below. Coal-tar-based sealcoat is a potent source of polycyclic aromatic hydrocarbons (PAHs)

Sources/Usage

Public Domain.